Jim McMahon

Jim McMahon

Stacy Thacker / Associated Press

Former Chicago Bears quarterback Jim McMahon speaks during a news conference on June 17. McMahon, who has been battling dementia, is among a group of former NFL players who have sued the league over its handling of player concussions.

Former Chicago Bears quarterback Jim McMahon speaks during a news conference on June 17. McMahon, who has been battling dementia, is among a group of former NFL players who have sued the league over its handling of player concussions. (Stacy Thacker / Associated Press)

Former Chicago Bears quarterback Jim McMahon speaks during a news conference on June 17. McMahon, who has been battling dementia, is among a group of former NFL players who have sued the league over its handling of player concussions.